1312401322431 has 12 divisors (see below), whose sum is σ = 1896040692520. Its totient is φ = 874772725680.

The previous prime is 1312401322429. The next prime is 1312401322433. The reversal of 1312401322431 is 1342231042131.

1312401322431 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 401 + 3 + 224 + 31 = 666.

It is an interprime number because it is at equal distance from previous prime (1312401322429) and next prime (1312401322433).

It is not a de Polignac number, because 1312401322431 - 2¹ = 1312401322429 is a prime.

It is a super-2 number, since 2×1312401322431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312401322395 and 1312401322404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312401322433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13405960 + ... + 13503501.

Almost surely, 2^{1312401322431} is an apocalyptic number.

1312401322431 is a deficient number, since it is larger than the sum of its proper divisors (583639370089).

1312401322431 is a wasteful number, since it uses less digits than its factorization.

1312401322431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26914886 (or 26914883 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1312401322431 its reverse (1342231042131), we get a palindrome (2654632364562).

The spelling of 1312401322431 in words is "one trillion, three hundred twelve billion, four hundred one million, three hundred twenty-two thousand, four hundred thirty-one".